Railway



(No Model.)

G. E. BALDWIN.

RAILWAY. v

Patented May 6, 1890.

' UNITED STATES PATENT OFFICE.

GEORGE E. BALDWVIN, OF PHILADELPHIA,

PENNSYLVANIA, ASSIGNOB, BY

OF KENTUCKY.

RAILWAY.

SPECIFICATION forming part of Letters Patent No. 427,291, dated May 6, 1890. Application filed February 10, 1888- Serial No. 263,580. (No model.)

To all whom it may concern:

Be it known that I, GEORGE E. BALDWIN, of the city and county of Philadelphia, and State of Pennsylvania, have invented an Improvement in Railways, of which the following is a specification.

My invention has reference to railways; and it consists in certain improvements, all of which are fully set forth in the following specification, and shown in the accompanying drawings, which form part thereof.

The object of my invention is to provide, a suitable chair for a girder-rail with provision for securing the said rail against lateral movement and at the same time so locate the clamping device for securing the rail to the chair that they shall be out of the line of wear. This construction allows of longitudinal movement due to expansion and contraction without displacement of the supportingchairs, making the rail more lasting and enabling the structure to be made substantial and yet be cheaply constructed.

In the drawings, Figure 1 is a cross-section z 5 of the railway embodying my invention. Fig. 2 is an enlarged view of Fig. 1, showing one of the chairs and sections of the rail.

Fig. 3 is a side elevation of same, and Fig. 4 is a perspective View of one of the clampingblocks.

A represents the rail, which is essentially of T shape, having the upper tread B and the lower tread D, preferably separated by a small groove d. The lower part of the rail at the 3 5 junction of the parts A and B is formed into a longitudinal rib O. The lateral edges of the treads B and D are respectively provided with longitudinal flanges E and F, arranged along the lower edges of said parts.

G is the chair, and is formed of two parts H H, united at their middle portion by rivets h and formed in the upper part, immediately above the rivets, with the slot S and the oppositely-extended flanges I and I ,preferably 5 at different heights, though the chair may be formed in one piece, if preferred. The rail rests on this chair in the manner shownthat is to say, the ribs 0 fit snugly down into the slot S, and the tread B rests upon the flange I, while tread D rests upon the flange 5o I thus forming a complete and continuous support for the entire cross-section of the rail. The upperparts of the flanges I I may have the lugs 1), as shown, which fit into corresponding grooves P P on the under side of" the tread parts B and D. This not only lightens the rail, but forms provision to more positively hold the same and to absolutely prevent spreading of the flanges I I of the chair.

In Fig. 1 these grooves P are not shown, as

they are not essential to my invention. The lower part of the chair has two extended lugs, terminating in a supporting-flange K, which rests upon the cross-tie, preferably at points on each side of the rail, so as to prevent any tendency of the chairs being upturned by a strain coming upon any portion of the rail. SpikesL are used to secure the chairs down upon the cross-ties M. The width across the chair at the top is greater than the width of the rail, so as to provide holes P P therein close up the rail. Clamping-blocks N are placed above the flanges I I and extend over the longitudinal flanges E and F of the rail.

Through the holes n of the clamping-blocks and holes P in the chair clamping-bolts O are passed, with nuts p upon the under surface of the flanges I and I. The clamping-blocks are so formed that by tightening the nuts p the blocks bind upon the flanges E and F and hold the rail down upon its chair. The rib G, fitting the slot S, prevents any lateral strain coming upon the bolts and also prevents any lateral displacement of the rail. From the construction of the clamping-ties it is evident that the rail may move longitudinally upon the chair, due to expansion and contraction, without in the least displacing the said chair.

In place of using the blocks F the bolts 0 may extend over the flanges E or F, or both, as shown in the right-hand part of Fig. 1, though I prefer to use the clamping-plates.

A side bearing-rail is shown in the drawings; but any type of rail maybe substituted '5 therefor.

The dotted part B. in Fig. 2 represents the change which would be made in the crosssection of the rail on curves, as at such places a curved rail is necessary.

While I prefer the construction shown, I do not limit myself to the details thereof, as they may be modified in various ways without departing from my invention.

Having now described myinvention, WhatI claim as new, and desire to secure by Letters Patent, i s- 1. A rail having the upper tread B and lower tread D, with the vertical web 0 below the line of juncture of said upper and lower treads, and the longitudinal lateral flanges E F, formed upon the lower edges of the treads B and D.

2. A rail having the upper tread B and lower tread D, with the vertical web 0 below the line of juncture of said upper and lower treads, and the longitudinal lateral flanges E F, formed upon the lower edges of the treads B and D, in combination with a chair of greater width than the rail and having the central groove S for the web of the rail and the upper and lower supports I I for the parts B and'D of the rail upon opposite sides of the web, and clamping-bolts for holding the rail down to the chair extending through the edges of the chair and acting on the flanges of the rail.

3. A rail having the upper tread B and lower tread D, with the longitudinal rib C below the line of juncture of said upper and lower treads, and the longitudinal lateral flanges E F, form ed upon the lower edges of the treads B and D, in combination with a chair of greater width than the rail and having the central groove S for the rib of the rail and the upper and lower supports I I for the parts B and D of the rail upon opposite sides of the rib, clamping-blocks resting on the chair and extending over the flanges E F of the rail, and clamping-bolts for holding the rail down to the chair extending through the edges of the chair and acting on the flanges of the rail through the mediation of said clamping-blocks.

4:. The combination of a rail A, having upper tread B and lower tread D, and lateral flanges E F, a chair having flange-supports I I, clamping-blocks N, supported on the chair and clamping over the flanges E F, and bolts 0 extending through the chair and blocks.

5. A rail having its lateral edges formed with projecting flanges E F immediately below its upper surface, a central rib C upon its lower part, and longitudinal grooves P P upon its under surface and upon opposite sides of the rib.

In testimony of which invention I hereunto set my hand.

GEO. E. BALDWIN.

Witnesses:

R. M. HUNTER, ANDREW ZANE, Jr. 

